Components of Working Capital - Other Current Assets Table (Details) - USD ($) $ in Thousands		Jun. 30, 2019	Dec. 31, 2018
NGLs inventory		$ 3,589	$ 6,466
Imbalance receivables		3,117	9,035
Prepaid insurance		1,259	1,972
Contract assets		12,501	5,399
Other		0	4,184
Total other current assets	[1]	20,466	27,056	[2]
WES Operating [Member]
NGLs inventory		3,589	6,466
Imbalance receivables		3,117	9,035
Prepaid insurance		587	1,972
Contract assets		12,501	5,399
Other		0	3,309
Total other current assets	[3]	$ 19,794	$ 26,181	[2]

[1] Other current assets includes affiliate amounts of $11.1 million and $3.7 million as of June 30, 2019, and December 31, 2018, respectively.

[2] Financial information has been recast to include the financial position and results attributable to AMA. See Note 1 and Note 3.

[3] Other current assets includes affiliate amounts of $11.1 million and $3.7 million as of June 30, 2019, and December 31, 2018, respectively.